55605616550 has 72 divisors (see below), whose sum is σ = 116456905656. Its totient is φ = 19726960000.

The previous prime is 55605616519. The next prime is 55605616597. The reversal of 55605616550 is 5561650655.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 135965 + ... + 360135.

It is an arithmetic number, because the mean of its divisors is an integer number (1617457023).

Almost surely, 2^55605616550 is an apocalyptic number.

55605616550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55605616550 is an abundant number, since it is smaller than the sum of its proper divisors (60851289106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55605616550 is a wasteful number, since it uses less digits than its factorization.

55605616550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224246 (or 224230 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 44.

The spelling of 55605616550 in words is "fifty-five billion, six hundred five million, six hundred sixteen thousand, five hundred fifty".